Clear Polythene Mailers
Clear Poly Mailers (7 x 10 + 2 flap / 178 x 254mm / 38mu)
These clear polythene mailers are designed for straightforward, lightweight packaging where visibility of the contents is helpful. The format is commonly written as 7 x 10 + 2, meaning the bag is approximately 7 inches wide by 10 inches long, with an additional 2-inch flap area for sealing. The clear film helps you quickly identify items during picking and packing, while the smooth polythene surface supports fast handling in busy dispatch environments.
Key Features
- Clear polythene film: Helps with quick content identification and tidy presentation for packed goods.
- Popular mailer format (7 x 10 + 2): A practical size for many small-to-medium items, with a flap area intended for closure.
- 38 micron (38mu) thickness: A lightweight film gauge suited to everyday packing tasks where a slim, flexible mailer is preferred.
- Neat, space-efficient storage: Poly mailers store flat and are easy to keep at the packing bench.
- Fast packing workflow: Simple bag-and-seal style packaging that can reduce packing time for suitable products.
Typical Uses
- Small boxed items and components
- Printed materials and paperwork (where a clear outer is useful)
- Lightweight products that benefit from a clean, protective outer layer
- General warehouse picking/packing where visibility speeds up checking
Clear Poly Mailers — Full Product Guide
Clear poly mailers are a simple, versatile packaging option used across ecommerce, fulfilment, retail back-of-house, and general warehousing. They provide a protective outer layer against light scuffs and handling marks, while keeping the contents visible for quick verification. This listing covers a clear mailer format shown as 7 x 10 + 2 (also provided as 178 x 254mm) with a film thickness of 38mu.
How It Works
Poly mailers are used by placing the product inside the bag, then closing the opening using the flap area. The “+2” in the size indicates the additional flap length beyond the main body of the bag. In day-to-day packing, this gives you a dedicated area to close the bag without reducing the usable internal length of the main compartment.
Because the film is clear, packers can confirm the correct item quickly, which can be helpful for multi-SKU operations or where visual checks are part of the dispatch process.
Materials and Construction
These are clear polythene mailers made from flexible plastic film. Polythene is widely used in packaging because it is lightweight, smooth, and easy to handle. The film gauge for this product is stated as 38 microns (38mu), which is a thinner, more flexible option compared with heavier-duty mailing bags. This makes it suitable for many everyday packing tasks where you want a tidy protective outer without adding unnecessary bulk.
What does 38mu mean?
“Mu” is shorthand for microns (µm). A 38mu film is 38 microns thick. In practical terms, this is a lightweight gauge that folds and conforms easily around the contents.
Choosing the Right Size (and what “7 x 10 + 2” means)
Mailers are often sized in inches with a flap allowance. For this product:
- 7 = approximate width
- 10 = approximate length of the main body
- +2 = additional flap length for sealing
The metric size is shown as 178 x 254mm, which corresponds to the 7 x 10 main body measurement. When selecting a mailer, consider not only the flat dimensions but also the thickness/bulk of the item you are packing. If your product is bulky, you may need to size up to allow for easy insertion and a reliable closure.
Floor Type Compatibility
Not applicable—this is a packaging consumable rather than a flooring product. However, for warehouse operations, poly mailers are commonly used at packing benches, in pick/pack stations, and in despatch areas where flat-packed consumables are preferred for efficient storage.
Health and Safety
As with all plastic packaging, keep poly mailers away from babies and small children due to suffocation risk. In a workplace setting, store packaging neatly to reduce trip hazards and avoid loose film near heat sources. If you use cutting tools to open cartons or trim packaging, follow your site’s standard safe knife practices.
Ideal Applications and Use Cases
Clear poly mailers are particularly useful when you want a clean outer wrap and quick visual identification. Common scenarios include:
- Ecommerce fulfilment: Packing smaller items where a lightweight outer is sufficient.
- Retail back-of-house: Keeping items grouped and visible for stock handling.
- Warehouse picking: Using clear bags to separate orders or line items while keeping labels and contents visible.
- Printed materials: Protecting documents or inserts from handling marks (where appropriate for your process).
If you require a fully opaque mailer for privacy, or a heavier-duty bag for sharp-edged products, consider alternative mailer types or thicker gauges.
Maintenance, Cleaning and Care
Poly mailers are single-use packaging items and do not require maintenance. For best results:
- Store flat in a clean, dry area to keep the film free from dust and debris.
- Avoid prolonged exposure to direct sunlight or high heat, which can affect plastic film over time.
- Keep packs sealed until use to maintain cleanliness at the packing station.
Case Study (Example Workflow)
Scenario: A small ecommerce operation dispatches a range of compact items and wants to speed up order checking while keeping packaging tidy.
- Pick: Items are picked and placed into clear poly mailers so the contents remain visible.
- Check: A second team member verifies the item visually without opening the bag.
- Pack: The flap area is used to close the mailer, keeping the main body length available for the product.
- Dispatch: Orders are grouped and moved to despatch with reduced handling marks on the product packaging.
This approach can be especially helpful where quick visual confirmation reduces packing errors.
Who Is It For?
- Businesses that want clear, lightweight packaging for suitable products
- Pick/pack teams that benefit from fast visual identification
- Operations looking for space-efficient consumables that store flat
- General warehousing and stock control where items need to be grouped and protected
Colours / Features Available
This product is listed as a clear poly mailer. Clear film is typically chosen when visibility is important for checking, sorting, or presentation.
Sizes Available
This listing covers the size shown as 7 x 10 + 2 (also stated as 178 x 254mm) with a 38mu film thickness. If you need a different format (larger/smaller dimensions, different flap allowance, or a heavier gauge), choose an alternative size or specification within the clear poly mailer range.
Need help choosing?
If you tell us what you’re packing (dimensions and whether it’s flat or bulky), we can help you select the most suitable mailer size and film thickness for your workflow.